Spring-tire.



G. A. WHEATON.

SPRING TIRE.

APPLIOATION FILED MAR,25,1912. RENEWED DEC 21,1912

1,068,720. Patented July 29. 1913.

2 SHEETSSHEET 1 H .Z, I

6 Hi4 I l WITNESSES: [N VENTOR.

A TTOR NE Y.

SPRING TIRE.

APPLICATION FILED MAR.25, 1912. RENEWED DEO.'21,1912. 1,068,720.

0. A. WHEATON.

m y B 2 SHEETS-SHEET 2.

Patented July 29, 1913.

WITNESSES A TTORNE Y.

CHARLES A. WHEATON, OF STOCKTON, CALIFORNIA.

SPRING-TIRE.

Specification of Letters Patent.

Patented July 29, 1913.

Application filed March 25, 1212,:Seria1 119,686,018. Renewed December21, 1912. Serial No. 738,080.

To all whom it may concern:

Be it known that I, CHARLES A. W'HEATON,

a citizen of the United States, residing at Stockton, in the county ofSan J oaqum and the use of metallic springs, and its object is toprovide in a tire of this kind a novel construction and arrangement ofparts to be hereinafter described and claimed, whereby a strong anddurable structure is produced, and one which may be applied to anyordinary wheel rim.

The invention has for its object to provide the tire with a demountabletread, and tillproved means for holding the latter in place.

In order that the invention may be better understood, reference is hadto the accompanying drawings forming a part of this specification, inwhich Figure 1 is an elevation of a fragment of the tire, partly brokenaway. Fig. 2 is a transverse section of the tire. Figs. 3, 4 and 5 aretransverse sectional views showing modifications. Fig. 6 is an elevationof a fragment of a tire, partly broken away, showinganothermodification. Fi 7 is a transverse section of the tire shown in Fig. 6.Figs. 8 and 9 are sectional views showing further modifications.

Referring specifically to the drawing, 10 denotes the telly of a wheel,on the outer periphery of which is mounted a fixed rim 11 having at oneof its edges a continuous annular channel 12, and at its other edge anoutstanding annular rib 13. This rim carries a second rim 14 which isintwo sections, connected by a bolt 15 passing through lugs 16 on theabutting ends of the sections. The rim 14 is formed on one de witha'continuons rib 17 which fits in the channel 12,

and on the other side of said rim is a continnous. channel 18 to receivethe rib 13. The 3 mentioned side of the rim 14 also has an outstandingradial flange 19.

On that side of the rim 14 which has the rib 17 located a ring 20 havinga rib 21 which fits in the channe formed by the rib 1'7. This ring 20 isalso in two sections which are connected by bolts 21* and pasS- ingthrough lugs on the abutting ends of the semi-ms. The ring has anoutstanding radial flange 23. This flange and the flange 19 are onopposite sides of the folly and extend entirely around the same.

The tread of the tire is a band 24 of any suitable wearing materialhaving a roughened surface to prevent skidding and to give' a bettertraction surface. The tread is mounted on a ring 25 which. is heldnormally concentric and in spaced relation with respect to the rim 14 bymeans of a series of double helico-volute springs 26 arranged radiallybetween said parts. The ends of the springs fit over bosses 27, wherebythey are retained in place. Figs. 1 and 2 show the bosses 27 formedintegral with the ri-in 14 and the ring 25 by being struck up therefrom.Fig. 13 shows a circular groove 28 made in the ring 25 for retaining oneend (if the spring. As shown in Fig. l washers 29 of suitablesound-deadening nfaterial may be interposed between the inner ends ofthe springs and the ring 25 and rim 14 to take up wear and eliminate thescratching noise from the action of the springs.

The ring 25 has inward bends 30 which project beyond the plane of theedges of the tread 24 and are screw-threaded as indicated at 31 toreceive clips for holdingthe tread. These clips are rings 32 which arethreaded to screw on the threaded parts 30, and have a each anoutstanding radial flange 33. The tread 24 fits between the flanges33-and is held thereby -against lateral displacement. The rings 32 alsohave an inwardly extending and inclined flange 34 terminating in astraight portion 35. The part 35 of one of the rings engages the outersurface of the flange 19 with a sliding fit, and the part of the otherring similarly engages the llangc'23, thereby guiding and permitting therelative movement of the parts which carry the tread and the parts whichare mounted on the felly 10. At suitable intervals the outer peripheryof the ring 25 has transverse ribs 36 which seat in correspondinggrooves in the base of the tread 24,

- dispensed with.

so that they operate irrespective of the direction in which the wheel isturning.

. The structure herein described forms a casing inclosing the springs,and in order to exclude dust, dirt, .etc., therefrom, the

parts 35 which engage-theflanges 19 and 23-have an annular groove 41 toreceive at packing material. When the tread 584 becomes worn, it can bereadily removed and renewed by unscrewing one of the rings 32. Fi 3shows the rings 25 and 32 secured toget er by a bolt 42,-the screw jointbeing Fig. 4 shdws a structure more especially adapted for bicycle andmotor-cycle wheels, the sectional channel members 43 and 44 forming thefelly of the wheel.

Figs. 6 and 7 show the invention applied to an ordinary demountable rim,the parts being held on one side by a clip 45 and on the other side by aring 46.

Fig. 8 shows a demountable rim member 47 held in place on a fixed rim 48by means of annular ribs 49 between which the latter Fig. 9 shows ademountable rim-member 50 with a fiber washer 51 and a retaining lug 52for'one end of the springs 26. A packing groove 53 is formed in theflange 54'of the member 50 and in the flange 55 of-the companion member56.

Various other changes and modifications in the structural details may bemade without a departure from the spirit and scope of the invention.

I claim:

1. The,oombination with a wheel felly; of a pair of superposed rimsmounted thereon, the in ner rim having a continuous channel at one ofits edges and an; outstanding rib at its other edge, and the outer rimhaying hn one side a rib which fits in the aforesaid channel, and at itsother side "a 1 channel to receive the first-mentioned rib, and" saidouter rim also having at one of its edges an outstanding radial flange;a ring carried by the the outer rim at its other edge, said ring havingan outstanding radial flange; a tread, a rin carrying the tread; springsinterposed bween the tread-carrying ring and the aforesaid outer rim;and tread-holding clips mounted on the treadcarrying ring, and havingside flanges which are in sliding engagement with the first-mentionedflanges.

2. The combination with a Wheel felly; of a pair of superposed rimsmounted thereon, the outer rim having an outstanding flange at one ofits edges; a ring carried by the outer rim at its other edge andhavstanding flanges at its edges; a tread; a

ring carrying the tread and projecting from opposite edges of thetread,.said pr0 ecting portions of the ring being screw-threaded;springs interposed between the rim and the ring; and rings screwed onthe projecting threaded portions of the tread-carrying ring, and havingflangeswhich engage the sides of the tread, and said second-mentionedrings also having flanges whlch are in sliding engagement with thefirsbmen- CHARLES A. WHEATON.

Witnesses:

. CHAS. H. YOUNG,

LEOTA ROOT.

Copies of this patent may be obtained for five cents each, byaddressing. the Commissioner of Patents. Washington, D. G.

